公开(公告)号：US20220224225A1

公开(公告)日：2022-07-14

申请号：US17710676

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chen CHEN ,  Bin MA ,  Weiping LIU ,  Zhaoxue CUI

IPC: H02M1/42 ,  H02M1/32

Abstract: This application provides a converter and an on-board charger, to avoid a short-circuit fault of the converter while inhibiting a surge impact. The converter includes: a power factor correction PFC circuit, a surge protection circuit, and a switch circuit. The PFC circuit is configured to: convert a first component of a first alternating current received by an alternating current terminal of the PFC circuit into a first direct current, and output the first direct current through a direct current terminal of the PFC circuit; and convert a second direct current received by the direct current terminal of the PFC circuit into a second alternating current, and output the second alternating current through the alternating current terminal of the PFC circuit.

公开(公告)号：US20220250494A1

公开(公告)日：2022-08-11

申请号：US17733824

申请日：2022-04-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Bin MA ,  Xiaoqiu LI ,  Chen CHEN

IPC: B60L53/22 ,  B60L58/12 ,  B60L53/53

Abstract: This application provides a wake-up circuit for a charge controller which includes a first-stage charging circuit and a second-stage charging circuit. The first-stage charging circuit includes a first capacitor. When an input terminal of the first-stage charging circuit receives a high level signal and the first capacitor is in a partially charged state, the first-stage charging circuit charges the first capacitor and outputs a first charging voltage to the second-stage charging circuit. When the input terminal of the first-stage charging circuit receives a low level signal, the first-stage charging circuit discharges the first capacitor. The second-stage charging circuit includes a second capacitor. When the second-stage charging circuit receives the first charging voltage output by the first-stage charging circuit, the second-stage charging circuit charges the second capacitor and outputs a wake-up signal to the charge controller. This application can increase a scenario coverage of the wake-up circuit to ensure high applicability.